Steam-heating apparatus.



J. F. MoELROY.

STEAM HEATING APPARATUS.

APPLICATION nun) 11110.9, 1910.

Patented Dec. 8, 1914 w ,W h n r 3 D a 77 m H K mm. 7 T a e I II Hun. E

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J. F. MoELROY.

STEAM HEATING APPARATUS. APPLICATION mum we. 9, wio.

' 1,120,319, Patented Dec.8,1914

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stance capable of expanding by heat and so UNITED STATES PATENT oEEicE.

JAMES F. MCELROY, OF ALBANY, NEW YORK, ASSIGNOR TO CONSOLIDATED CAR- HEATING COMPANY, A CORPORATION OF WEST VIRGINIA.

STEAM-HEATING APPARATUS.

Specification of Letters Patent.

Patented Dec. 8, 1914:.

Application filed August 9, 1910. Serial No. 576,382.

To all whom it may concern:

Be it known that I, JAMES FTMoELnoY, a citizen of the United States, residing at Albany, county of Albany, State of New York, have invented certain new and useful Improvements in Steam-Heating Apparatus, the following being a full, clear, and exact disclosure of the one form of my invention which I at present deem preferable.

For a detailed description of the present form of my invention, reference may be had to the following specification and accompanying drawings forming a part thereof, in which- Figure 1 shows a vertical section of a structure embodying my invention; Fig. 2 shows the same, applied to the heating system of a railway car; Fig. 3 is a transverse view of Fig. 2. In my present invention I employ a single thermostatic controller subjected to the discharge from the radiator outlet, but I so connect this controller with both valves that it will operate either valve alone, or will operate them both together. a By this means I am able with the use of only one controller to convert the system to either a high-pressure or a low-pressure system, or to make it an intermediate system.

Referring to Fig. l which shows a vertical section of my apparatus, the whole is inclosed in a casing in which there are three ports, viz: port 1 for the incoming live steam from the train-pipe, port 2 for the incoming of the dischargefrom the radiator, and port 3 (shown in dotted lines) for the outgoing live steam to the radiator.

The live steam from the train-pipe entering port 1 arrives in chamber F and then passes through the hand-operated valve D (which we may assume to be open) into chamber G. Thence it passes through inlet valve A, if that valve is open, into chamber H, from which it passes out through port 3 to the radiator. After going through the radiator and there giving up most of its heat, it returns as water and condensed steam to the port 2 and enters chamber K. Thence it passes outlet valve B, if that valve is open, and falls upon the thermostatic controller 0. That controller is of well known construction and need not be described at length. In brief it comprises a sealed'expansible vessel O? containinga subenlarging or contracting the vertical dimensions of vessel O according to the temperature to which it is subjected. As O expands, against the force of a spring O it forces upward a rod O carrying the outlet valve B and tending to close the same against its seat and, under certain conditions will do so. The rod C is also con nected to the inlet valve so that an auxiliary adjustment of said valve may be obtained as follows: On the upper end of rod O is a rotatable cap E having a spiral cam on its upper side. Cap E is rotated by means of rotary rod E which extends upward there from and enters a recess in the top of the casing where it is provided with two radial arms E and E between which is a pin E mounted eccentrically on the rotary stem E which has a. handle E By turning handle E, the cap E may be rotated any desired degree within limits fixed by stops E between which plays an arm E on rod E.

On the aforesaid spiral cam on the upper side of cap E bears one leg E of an angle lever, whose opposite leg E is connected by link E to a nut E on the stem E of the inlet valve A. By means of said nut E any desired initial adjustment of valve A may be obtained. A spring E may be ap plied to the angle lever, if desired, although the steam pressure on valve A will tend to press the leg E against the cam.

The arrangement just described constitutes what may be called a determining ,con nection of the controller with respect to the inlet valve A, the rotating cap E being the determining agency and the operation being as follows: If the cap E is turned so that the maximum vertical thickness of its spiral cam comes under the extremity of leg E of the angle lever, then the controller will operate to close inlet valve A, outlet valve B remaining open, since valve A will come against its seat and close while valve B will not, assuming that the rod of the controller rises by reason of the expansion of vessel C upon a rise of temperature in the discharge water delivered on it from the radiator. The system will then be a low pres sure system suitable for milder weather, the admission of steam to the radiator being controlled at the inlet point. On the other hand, when thecap E is turned so that the minimum vertical thickness of its spiral cam comes under the tip of leg E of the anglelever, then the controller will operate to close outlet valve B, the inlet valve A remaining open, since the outlet valve B will come against its seat and close, but inlet valve A will not. The system then becomes a high pressure system, suitable for the coldest weather, there being no restriction on the admission of steam to the radiator pipes through the inlet valve,'while the controller will only open the outlet-valve to allow escape of the water of condensation which has parted with its heat.

By turning the cap E part way the system will be made of an intermediate character,-both inlet and outlet valves closing at the same time. 1

In Figs. 2 and 3 I have shown the above described apparatus applied to a railway car. 0 is the train pipe from which live steam is conducted through branch pipe P to port 1. S is a pipe conducting steam from port 3 to the radiator pipes T of the car. R is the return pipe from the radiator which communicates with port 2.

What I claim as new and desire to secure by Letters Patent is: V

1. In a steam heating apparatus, the combination with a radiator, of an inlet valve, an'outlet valve, a thermostatic controller, operating connections between said controller and the said valves, said operating connections including means for initially adjusting one of said valves and also inependently adjustable means interposed between said controller and the said initial adjusting means whereby either valve may he closed while the other remains open,

2. In a steam heating apparatus, the con: bination with a radiator, of an inlet valve,

an outlet valve, a thermostatic controller arranged in the path of discharge from the outlet valve, operating connections between said controller and. the said valves, said operating connections including means for initially adjusting one of said valves, and also including independently adjustable means interposed between said controller and'the said initial adjusting means, wherebv either valve may be closed while the other remains open. 7

3. In a steam heating apparatus, the combination with a radiator, of an inlet valve and an outlet valve therefor, an operating controller for said valves, operating connections between said controller and the said valves, said operating connections including a local adjusting device for one of said valves, and also including an independently adjustable connection between said controller and the said local adjusting device, whereby either valve may be closed while the other remains open.

fl. In a steam heating apparatus, the combination with a radiator, of a casing having an inlet and an outlet for the radiator, valves controlling said inlet and outlet respectivel and located withinthe casing, an operating controller for said valves located exteriorly of said casing, and an operating connection between the controller and valves including means for initially adjusting one of said valves and auxiliary adjusting means whereby either valve may be closed while the other remains'open.

In a steam heating apparatus, the combination with a r'adiator, of a casinghaving aninlet and an outlet for said radiator, an

inlet valve within said casing, an outlet valve also withinsaid casing, a thermostatic controller located exteriorly of said'casing, and an operating connection betweenthe controller and the valves including'means for initially adjusting one of said valvesand auxiliary adjusting means whereb either valve may be closed while the other remainsopen.

6. In a steam heating apparatus, the combination with a radiator, of an inlet valve, an outlet valve, a thermostatic controller, operating connections between said controller and the said valves, said operating connections beingprovided with means for initially ad usting one of sa d valves and including an independent cam interposed between said controller and the said initial mounted independently of said controller,..11o an outlet'valve carried by said controller,

an operating arm for said inlet valve,'means for initially adjusting said inlet valve relative to its seat, and an adjustable connection between said operating arm and said controller. f

9. The combination with a steam radiator, of a thermostatic fco ntroller, an inlet valve mounted independently of said controller, an outlet valve carried by said controller,

means for initially adjusting said inlet" valve relativeto its Seat, a cam carried by said controller, an operating arm for said inlet valve engaging said cam, and'means for moving said cam.

10. The combination with a steam radiator, of 'a thermostatic controller, an inlet valve mounted independently of said con troller, an operating armfor said Valve, an ustable connection between" said arm and said valve, an outlet valve carried by said manually operable means controlling the controller, and an adjustable connection becam whereby either valve may be closed tween the operating arm of said inlet valve while the other valve remains open. and said controller. In witness whereof I have hereunto set 5 11. In a heating apparatus, the combinamy hand, before two subscribing Witnesses, 15

tion with a radiator, of an inlet valve, an this 14th day of July, 1910.

outlet valve, a thermostatic controller 0011- JAMES F. MoELROY. nected with the outlet valve, a cam carried \Vitnesses: by the controller, an operating connection ERNEST D. JANSEN,

10 between the cam and the inlet valve, and ROBERT MoCooHRANE.

Copies of this patent may be obtained for five cents each. by addressing the Commissioner of Patents,

Washington, I). O. 

